Any law like like that would be circumvented through creative “leasing” of royalties.
Individual copyright: 25 years or date of death + 10 years.
Corporate copyright: 25 years.
a) That +10 years after holder death no longer makes sense
b) Corporations would be unable to posses copyright.
a) Is a clear and simple exception, that permits inheritors to receive proceeds of a work for a limited time. It would prevent the abusive control some estates have over copyright decades after the creator's death.
b) Intent seems rather like the clauses for code copyright many of us have had in contracts of employment. IANAL but I'm sure something could be drafted that limits transfers but still allows design companies assigning copyright of the customer's new logo. Perhaps the only transfer can be limited to the first three months after creation or something.
We see the same sort of thing with patent trolls - if all you do is buy up IP and then sue someone, that's not a model that furthers humanity or IP creators.